一种利用废铬渣催化热解废橡塑及还原六价铬的方法
By utilizing waste chromium slag for catalytic pyrolysis of waste rubber and plastics, combined with microwave technology and carbon dioxide gas supply, the problems of low pyrolysis efficiency of waste plastics and waste rubber and low reduction efficiency of hexavalent chromium have been solved, realizing efficient resource utilization of waste and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO UNIV OF TECH
- Filing Date
- 2024-08-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies have low pyrolysis efficiency for waste plastics and waste rubber, and insufficient harmless treatment and resource utilization of waste chromium slag, especially low reduction efficiency of hexavalent chromium.
Using waste chromium slag as a catalyst, and through an integrated catalytic reforming generator and a microwave reactor, combined with ex-situ and in-situ catalytic pyrolysis technologies, the catalytic selectivity of waste chromium slag and the microwave absorption properties of pyrolysis residue are utilized. Combined with carbon dioxide supply to generate reducing gas, the catalytic reforming of high-temperature oil and gas and the reduction of hexavalent chromium are achieved.
It increased the yield of waste rubber and plastic pyrolysis oil, promoted the dual resource utilization of waste rubber and plastic and chromium slag, improved pyrolysis efficiency and the reduction rate of hexavalent chromium, and realized the dual advantages of high-value resource utilization of waste and environmental protection.
Smart Images
Figure CN119078025B_ABST